Concrete form



Aug. ll, 1925. 1,549,392

M. STIELER CONCRETE FORM Filed May 5. 1924 3 Sheets-Sheet 2 Aug; 11, 1925.

M. STIELER CONCRETE FORM Filed May 5. 1924 3 Sheets-Sheet 3 tion;

MARTIN STIELEE, QF CHICAGO, ILLNOIS.

CONCRETE FORM.

Application led May 5, 1924.

To all fui/tom t may concern.'

Be it known that I, MARTIN Srrnmin, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful improvements in Concrete Forms, of which the following is a specification.

My invention relates to concrete forms, and more particularly to forms for making concrete chimneys. The object of the invention is to provide an improved construction of this kind arranged to expedite the building of concrete chimneys and structures of" various forms and shapes; and also to provide improved means for readily placing and adjusting the form members in posi- Other objects will appear hereinafter. The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the. accompanying drawings forming a part of this specification, and in which Y Fig. 1 is a plan View of the invention;

Fig. 2 is an outer elevational View of the invention;

Fig. 8 is a vertical cross section thereof taken on line 3--8 of Fig. 2;

Fig. 4 is an enlarged fragmentary vertical section taken on line 4 4 of Fig. 1

Fig. 5 is a fragment-ary vertical view taken on line 5-5 of Fig. 4;

Fig. 6 is an enlarged vertical section taken on line 6 6 of Fig. 3;

Fig. 7 is a fragmentary section taken on line 77 of Fig. 2;

Fig. 8 is an enlarged detailed section taken on line 8 8 of Fig. 5, and

Fig. 9 is a view of the fastening strap with the swivel adjusting means thereon, as also shown in Fig.l 7

The preferred form of construction, as illustrated in the drawings comprises an inner form casing or shell I and an outer form casing or shell 4E, which in the construction of a chimney are arranged concentrically, as shown. The inner form part or shell I includes a plurality of flexible sheet metal plates 12 placed adjoiningly at their side edges. Vertical reenforcing or stiffening bars 13y are secured to the outer sides of Said Plates preferably three bara ythe bars 13 thereon.

serial, No. 710,984.

being used on each plate. Each bar is provided with an upper offset portion 14 and a similar lower offset portion 15, and a band portion or member 16 is secured between each plate 12 and the offset portions 14 of This member 16 is adapted to receive and hold the lower end of the next form plate placed above the plate 12. Openings or slots 17 are provided in the upper edge of each band 16 andextend to the plate 12, to permit the surplus moisture and impurities or latents to drain on" from the top of the concrete which is filled to the upper edge of said band members 16 and which is permitted to stand and harden. These slots 17 are also adapted for passing tie rods 18 therethrough which extend from the vertical tie rods in the concrete inward to be attached to the scaffold posts for retaining the scaolds firmly in position, and said rods may be retained in the slots when the succeeding plates are placed in position above the present plates 12 and inward of the bands 16. (See Fig. 1.)

The means provided for holding the plates of the inner -shell in position includes a plurality of hooks or members 19 secured on bars 13 with suitable bolts, and a plurality of rods 2O clamped and retained in said hooks, each rod being preferably continuous and laid or extended a plurality of times around said shell. The inner diameter of such a chimney is usually uniform through* out, but when it varies or tapers upwardly, then one or more pair of the plates are slightly Voverlapped to provide for such taper, such overlapping being conveniently accomplished and the slight ridge of the concrete produced thereby being imperceptible since the plates are thin and flexible.

The outer form means or shell E includes a plurality of flexible sheet metal plates 22 which are joined at their longitudinal edges,

and vertical stiffening or re-enforcing bars 23, made preferably in the formof T-bars, are mounted on the outer sides of said plates, and are preferably secured to and overlap the joining edges of the adjacent plates for completely closing the joints, as best shown in Fig. 5. Said bars are preferably secured to the plates. by means of screw bolts 24, and the bolt holes in said bars are countersunk to receive corresponding depressed portions 25 of the plates, so that when the bars and belts are drawn and tightened in position by lll) means of said bolts, that the inner surfaces of such plates for engaging the concrete are smooth and even. The bars 13 are similarly fastened to the plates 12 of the inner shell with screws 24 and countersinlrs and depressed portions 25 on said plates, as shown in Fig. 6.

As the outer shell E is moved upward t-o form a narrower or contracted part of the structure, the joined edges of two or more of the thin flexible plates are placed in overlapping position, as shown at 26 in F ig. 7, the corresponding re-enforcing bar 23 being first removed lfrom said connected edges. The plates are drawn and held together by means of straps or members 27 fastened with lthe outer end with bolts28 on bars 23, said straps having angle members 29 at the outer ends, and a rod consisting of two swivelled parts l30 is extended through 'the angleme'mbe`rs`29 and provided with nuts 31 for drawing and-adjusting said straps and thereby s'aid plates into proper position around the 'outer upper edge ofthe last made section 'of the chimney' or other structure. Rod 30 is swivelled in order that it may move outward atthe middle part so that said. part need not press 'inward or possibly buckle the underlying plate 22 ywhen the curvature ofsaid flexible plate is increased due to the decreased diameter ofthe chimney or similar'` structure.

Means is provided for readily lifting the outer shell VE into a. new elevated position and for accuratelydrawing and adjusting the upper end vof. Vthe shell in. such new position. This means comprises a frame orV diaphragm which, Vfor Vconstructing a` chimney, includes an inner annular member or ring 32 and an. outer annular member or Vring 33 concentric with said inner member, both ,being lpreferably formed of overlappingse'ctions of angle irons, as shown. Crossbars 34 are provided with plates 3l' and 35 `on their downturned ends and are secured with said plates to the inner and Y outer 4ring members 32 33 respectively, by vmeans Vof suitable bolts, as best shown in Figs. 4 and 5. A threaded rod 36 is mounted for rotation in said plates and ring members, and is yheld against longitudinal movement therein by means ofV nuts ormembe'rs and 38 which are secured to rod A36 with pins or in'any suitable manner. A hanger 39 is mounted with a yoke 40 on thec'ross bar 34 and a roller 41 is mounted in said yoke for readily moving said'hanger on bar 34. The lower end 42 of said hanger is bent vto embracea band or member 43 fastened with a .block44on the upper end ofplat'e22, and a roller 45 is mounted in end, 42 'for engaging :band 43 and readily moving thereon. *The'bands 43 and blocks 44j provide 'offset means Vonthe ends of the pl`ate`s'2`2 whereby said frame including the and hanger is adapted to raise the plates formi Two inner shell sections I and one such j exterior shell E are., usually employed, as indicated in Fio. 13, for constructing a section of concrete which is permitted to stand and harden, whereupon the sections are moved upwardlyby means of the suit- .13

ableV -derrick usually employed, the outer shell being moved directly upwardly, and adjusted by means of crank 46, while the rods 2O of the lower section of the inner shell are loosened and the plates of said ble of variation and modification without .j departing from the spirit of the invention.

I, therefore, donot wish Ito `be limited to the precisedetails of construction set forth, but desire to avail myself of such variations and modifications as come within the scope ofV theappended'claims. Y ,j

Having described .my invention what I claim as new and desire to secure by Letters Patent is: l Y

1. A concrete, form comprising a plurality of plates provided with upper hands having openings at thel top edges for draining moisture and latente from the top of the concrete, j

and means for mounting plates in position.

2. A concrete form comprising` a form member or shelL'means at the upper end of said` shell Afor. engaging avsuperposed form member, said means being provided `with slots in the top edge for draining latent-s therefrom and for extending tie` rods therethrough.' j A l 3. A concrete form Y of plates, members at the upper endsof said plates forV receiving similar plates superposejd on the first plates, said members having andV holding said Vltlll comprising a plurality Vcrete and also arranged for slots at the upper edges for draining surplus moisture and latents from the top ot the coni extending tie rods therethrough below the superposed plates.

4l. A concrete form comprising a plurality of plates, reenforcing bars on said plates, bands mounted between the upper odset ends of said bars and said similar plates vof the succeeding form, said bands having slots at the upper edges for draining latents and surplus moisture from the top of the concrete and for receiving tie rods therethrough.

5. A concrete form comprising a plurality of resilient plates, reenforcing bars ysecured longitudinally on said plates, supporting and clamping hooks on said bars, and a continuous rod clamped and held firmly in position in said hooks and extending a plurality of times overlapped along said plates.

6. A concrete form comprising a plurality of resilient plates, reenforcing bars with odset portions at the top and bottom, bands with slots mounted in some of said odset portions and secured to said portions and plates, said bands being adapted to receive and hold similar p-lates of the next succeeding form, supporting hooks mounted on said bars, and continuous rods clamped in said hooks each extending a plurality of times around said plates.

7. A concrete form comprising a shell, means offset laterally from said shell, a frame provided with means for supporting and movin(T said odset means, and means connected with said supporting means for accurately adjusting said shell.

8. A concrete form comprising a shell, means odset laterally from said shell, a frame provided with means for supporting and moving said odset means, and a threaded member operat-ing on said supporting means for accurately adjusting the same and said shell. Y

9. A concrete form comprising a shell, means odset transversely from said shell, a frame, hangers on said frame, and rollers on said hangers engaging said odset means.

10. A concrete form comprising a shell with odset means on said shell, a frame, hangers with rollers movably mounted on said trame, and rollers on said hangers t movably engage said odset means.

11. A concrete form comprising a shell with odset means on said shell, a frame, hangers with rollers movably mounted on said frame, rollers on said hangers to movably engage said odset means, and means for accurately adjusting said hangers and shell.

12. A concrete form comprising a. shell including a plurality of separable plates, means odset laterally from each plate, a frame, a hanger movable on said frame,

plates for receiving.

including an inner and an means on said hanger to engage and readily move the same along said odset means, and a member having threaded engagement with said hanger for moving and accurately adjusting said hanger and plate.

18. A concrete form comprising a shell provided with means odset laterally therefrom, a frame provided with hangers adjustably mounted thereon and having means for engaging said odset means and to lift and support said shell, and means movably engaging said frame and said hangers for accurately adjusting the hangers.

14. A concrete form comprising a shell provided with odset means, a frame including cross bars, hangers movably mounted on said bars, means on said hangers including rollers for engaging said odset means to lift said shell.

15. A concrete form comprising a shell including a plurality of separable plates, means odset radially from each plate, a frame including' radially extending bars, a hanger movably mounted on each bar, means rotatably mounted in each hanger for engaging under the odset means on said plate to lift the same;

16. A concrete form comprising a shell with radial odset means, a holding frame outer member, cross bars connected to said members, members travelling on said bars and having means for engaging said odset means, and means extending through said frame members for accurately adjusting said shell.

17. A concrete form comprising a shell with odset means, a frame including an inner and an outer member, cross bars connected to said inner and outer members, hangers travelling on said bars and having means for engaging said odset means, and members mounted for rotation but against longitudinal movement in both of said frame members for accurately adjusting said shell.

18. A concrete form comprising a shell provided with radially odset means, a frame including an inner and an outer member, cross bars secured to said inner and outer members, hangers provided with rollers for travelling on said bars means including rollers on said hangers for engaging and movably supporting said odset means, and a threaded rod extending through said frame members and the connected parts of said cross bar for accurately adjusting said hangers and shell.

19. A concrete form comprising a shell including a plurality of dexible sheet metal plates, reenforcing bars mounted over the joining edges of said plates, straps connected to pairs of re'enforcing bars, swivelled rod means connected to said straps for drawing the plates together, odset means on the upper ends of the plates, a frame with supporting means for engaging said odset means and to lift and support said plates, and means on said kframe for accurately adjusting said lifting means and plates. n

20. A concrete form comprising a shell including a plurality of flexible plates, reenfoicing bars mounted over the joining edges of said plates, straps connected to the lower parts of several of said bars, swivelled rod means connected to said straps for vdrawing and holding the pla-tes togetliei, olfset means on the uppei1 ends of thefplates, a frame including an inner and an outer membei", Cross bars connected to said frame members, means movably inountedlon said cross bars for supporting and moving said plates, i5

and "threaded means on said frame members MARTIN STIELER.

Vitnesses z JOSHUA R. H. PoTTs, MARGARET Annu. 

